Process of forming shaped phenolic condensation products.



pendlng for forming bearmgs,

formed. In this present application, I

STATES PATENT OFFICE.

JONAS 'WQAYLSWORTH, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO GOIN'DENSITE COMPANY OF AMERICA, 01? GLEN RIDGE, NEW

JERSEY.

JERSEY, A CORPORATION OF NEW PROCESS FORMING SHAPED PHENOLIO CONDENSATION PRODUCTS.

filed May 13, 1911.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, JONAS W. AYLswoR'rH, a citizen of the United States, anda resident of East Orange, in the countyof Essex and State of New Jersey, have invented a certain new and useful Process of Forming Shaped Phenolic Condensation Products, of which the following is a description. 7

This application is a division of my coapplication, Ser. No. 579,131, filed August 26, 1910, entitled Bearing composition and process of forming the same.

The above mentioned application relates to a process of forming shaped phenolic condensation products and also to a process as a specific embodiment of the invention, and also as a new composition ofmatter, a bearing composition formed by my process.

In my application above referred to, I have claimed. as a new composition of matter, the bearing composition formed by the invention and the process by which .said product and I similar products may be will claim a process for formin shaped phenolic condensation products, which is not limited 7 to the production of bearing compositions.

,formed by myJ Referring to the bearing composition invention as described in my application a ove referred to, a lining for bearing boxesis produced which liningmay be castabout a shaft, hardened by theapplication of'a low temperature as from 200 to 230 E, into a eating factor, and which will become in4 fusible upon the completionof the hardening reaction of the ingredients thereof.

\ The composition, which as is stated in the above application above referred to. I prefer 'to'use for bearings, comprises a fusible soluble condensation product of phenol and formaldehyde, anhydrous phenol, graphite, hexamethylene-tetra-amin, with or Wltl'lOllt the addition of an orgamc anhydrid, such as stearic anhydrid for example, and a final product solvent element or plasticity agent,

such as mono-nitro-naphthalene, or monochloro-naphthalene, or other substances per: forming the same function, such as are described in my application, Ser. No. 496,060, composition and process of manufacturing the same, filed May 14, 1909.

mass having a high lubriw If desired, the organic acid anhydrid may be used as the final product solvent element alone, without the addition of another such element, as mono-nitro-naphthalene. If the organic acid anhydrid is used, and hexan1ethylene-tetra amin is used as. the hardenmg agent for the mass, the ammonia evolved by the reaction between th hexa methylenetetra-amin and the phenol resin combines with the acid anhydrid to form an acid amid, as is set forth in my Patent No. 1,020,593, dated March 19, 1912. The acid anhydrid also serves to combine any water contained in the mass or evolved in the reaction and renders the same harmless, as

stated in my said patent.

The materials are mixed as follows: The fusible condensation product or phenol resin is melted together with the phenol and the product solvent element, if the latter is used and when all the ingredients are melted and in solution, hexa-methylene-tetra-amin is added in a fine state of sub-division and the temperature maintained at from 200 to 230 F. and rapidly stirred until the hexamethylene-tetra-amin dissolves; The graphite is then added and stirred into the mass which is then quickly poured into the hearing box. The hearing box should 'preyiously be heated to a temperature of. 230

to 250 F. and after pouringthe licl'iiidmass,

"the bearing is wrapped in a heat-insulating covering; 1 In a few being maintained at reactin will harden to' a phenolic con ensation product which is ,infusible,- has. very little conminutes, the mg terial,

traction, and forms a close fitting bearing which is selfdubricating to a large extent and is unaffected by lubricating oils. Sllltable proportions for this compositiom are: Phenol resin. or fusible soluble henolic condensation product as describe preferably anhydrous'100 parts; anhydrous phenol'-. 15 tov 30- parts; .stearic anhydrid-5 to 10 parts; hexa-methylene-tetra-amin- 13 to 28' parts; graphite-45 to 30 parts.

Other hardeningagents having the methylene radical 0H,, such as tri-oxy methylene, may be used in place of the hexamethylene-tetra-amin. "The henol resin is preferably in completely anhydrous form,

which result is attained as'is explained in Patented Nov. 3, 1914.

No Drawing. Original application filed August as, 1910, Serial No. 579,194; Divided and an application Serial No. 626,949.

temperature,

my application, Ser; No. 496,060, referred to a temperature of about 400 F.

It is obvious that the invention here de-' scribed has many uses apart from'the formation of bearings cast about a shaft ina hearing box.

Accordingly, theobject of my invention as disclosed and claimed, in this present application, is the production of a process for forming shaped phenolic condensation products consisting in pouring into a hot mold .a solution or liquid mixture of ingredients which react on application of sufficient heat to form an infusible. insoluble phenolic condensation product, the solution or mixture being heated to reacting temperature when poured into the mold, the mold then being covered or otherwise insulated against the escape of heat and the final reaction permitted to take place within the mold without further attention. This process-can be carried out by simply mixing the ingredients together in a suitable solution or fused mass containing the inthe' mold. In this aspect of my process, it is not necessary thatvgraphite be present in the composition poured. The melted massciently to render the mass non-fluid, The

reaction then proceeds without addition of heat, it only being necessary to havethe mixture andthe mold sufiiciently hot' at the time of pouring and to prevent, as far as is practicable, the escape of heat from the composition and the mold during the reaction.

Having now described my invention what I claim as new and desire to protect by Letters Patent is:

-1. The process of formin a hard shaped wphenolic condensation pro uct, which consists in'mixing together in liquid condition ingredients capable of reacting together on gradients, which, when heated sufficientlywill become thin enough to readilypour into application of suflicient heat to form an insoluble, infusible phenolic condensation images product, heating a mold to a temperature at least equal to the final hardening reaction temperature of said ingredients,heating the said liquid mixture of ingredients, pouring the same into the hot mold. insulating themold to prevent or retard the escape of heat therefrom, permitting the said reaction to ensue and the said hard shaped phenolic condensation product to be formed accordingly, substantially as described.

2. The process of forming a hard shaped phenolic condensation product, which consists in melting a fusible, soluble phenol resin, dissolving therein a substance containing the methylene radical, capable of reacting with said phenol resin to form an infusible product, heating the solution to the temperature necessary for the said reaction, pouring the same into a hot mold before the mass has become infusible, insulating the mold to prevent the escape of heat and permitting the said reaction to ensue without the addition, of further heat and the said hard shaped phenolic condensation product to be formed accordingly, substantially as described.

3. The process of forming a hard shaped .phenolic condensation product, which consists'in melting a fusible phenol resin, dissolving therein hexa-methylene-tetra-amin' in amount sufficient, upon reaction between the two, to cause the formation of an'infuslble; product, heating the solution tothe temperature necessary for the said reaction, pouring the same into a hot mold before the mass has become infusible, insulating the mold to prevent the escape of heat, and permitting the said reaction to ensue without the addition of further heat and the said hard shaped phenolic condensation product to be formed accordingly, substantially as described.

This specification signed and witnessed' this 10th day of May 1911.

' JON S W. AYLSWORTH. V Witnesses:

' ANNA R. KKIQEHM,

VCLABENYCE Crrunomm. 

